CN214656856U - Multidimensional curved surface shaping pickling plate bracket steel template - Google Patents

Abstract

The utility model relates to a multidimensional curved surface shaping pickling plate bracket steel template. The steel formwork comprises an upper shaping steel formwork, a middle shaping steel formwork and a lower shaping steel formwork, wherein the vertical surfaces of the upper shaping steel formwork and the lower shaping steel formwork adopt an oblique cone male-female angle formwork with a curved surface provided with a 20cm inclined plane formwork, and the middle shaping steel formwork adopts an oblique cone formwork; the upper, middle and lower shaping steel templates are connected in sequence. The problem of stable stress of a high bent structure caused by the fact that a conventional supporting bent is combined with a shaping arch frame to serve as a template stress supporting system is solved, and the appearance forming quality of concrete is greatly improved.

Description

Multidimensional curved surface shaping pickling plate bracket steel template

Technical Field

The utility model belongs to the technical field of hydraulic and hydroelectric engineering concrete form construction, specifically a multidimensional curved surface design pickler board bracket steel form suitable for cast in situ concrete bracket structure.

Background

In order to meet structural functions or use requirements, reinforced concrete corbel structures are usually designed at the positions of plants, main transformers, tail water surge chambers and the like of hydraulic and hydroelectric engineering.

Taking a deeply-buried cylindrical tail water surge chamber of a water diversion power generation system project of a certain hydropower station as an example, the maximum excavation diameter of the surge chamber is 48m, the maximum excavation height is 127.91m, and a lining form of a reinforced concrete structure is adopted in the design. In order to meet the maintenance requirement during the operation of the engineering, a cast-in-place reinforced concrete corbel structure is arranged at the top of the tail water surge chamber structure concrete. The upper and lower vertical surfaces of the bracket are cylindrical curved surfaces, and are connected through a 1:1.5 inclined plane to form an inclined cone; the structure and the size of the bracket are complex and changeable.

The conventional template scheme is adopted to carry out construction in a mode of 'straight instead of curved', the poured structure body is in a zigzag shape, the deviation with the designed body size is large, the gap between the templates is large, and the appearance forming quality effect is poor.

Disclosure of Invention

The utility model aims at providing a multidimensional curved surface shaping pickling plate bracket steel template which can be used for a cast-in-place concrete bracket structure.

The technical scheme of the utility model is that: a multi-dimensional curved surface shaping pickling plate bracket steel template comprises an upper shaping steel template, a middle shaping steel template and a lower shaping steel template, wherein the vertical surfaces of the upper shaping steel template and the lower shaping steel template adopt an inclined cone male and female angle template with a curved surface and a 20cm inclined surface template, and the middle shaping steel template adopts an inclined cone template; the upper, middle and lower shaping steel templates are connected in sequence.

The upper, middle and lower shaping steel templates of the bracket adopt acid pickling plates with very high surface flatness and finish degree as the panels of the templates.

The curved surface templates of the vertical surfaces of the upper shaping steel template and the lower shaping steel template are provided with 20cm oblique cone male and female angle templates.

And built-in lacing bar taper sleeves are arranged on the upper, middle and lower shaping steel templates, and the fixed templates are reversely pulled through the cooperation of lacing bars and anchor rods or inserted bars.

The utility model has the advantages that:

the first is that the template is composed of an upper shaping steel template, a middle shaping steel template and a lower shaping steel template. The upper and lower vertical surfaces adopt concave-convex angle templates with curved surfaces and oblique cones, and the middle inclined surface adopts an oblique cone template, so that the shape of each curved surface is ensured to accord with the structural design body type.

And secondly, the curved surface templates of the upper and lower vertical surfaces of the bracket are provided with 20cm inclined cone templates (similar to internal and external corners), so that the defect of concrete surface quality caused by the conventional seam design at the intersection position of the upper and lower vertical surfaces and the inclined surface of the bracket is eliminated.

Thirdly, the acid pickling plate with high surface smoothness and finish is used as a panel of the template, so that the appearance forming quality of the concrete is greatly improved.

And fourthly, the template adopts a structural stress system with a built-in tie bar combination ring and a longitudinal back ridge reversely hung, so that the problem of stable stress of a high bent structure caused by the combination of a conventional support bent and a shaped arch frame as a template stress support system is solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a structural schematic diagram of a bracket steel template of a multidimensional curved surface shaping pickling plate.

FIG. 2 is a cross-sectional reference view of a bracket steel formwork of the multidimensional curved surface shaping pickling plate.

In the figure: 1-structural concrete, 2-lower vertical surface curved surface formwork, 3-inclined surface conical formwork, 4-upper vertical surface curved surface formwork, 5-tie bar, 6-built-in tie bar taper sleeve, 7-longitudinal back edge, 8-circumferential back edge and 9-tie bar anchor rod or dowel bar.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electric welding connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figure 1, the multidimensional curved surface shaping pickling plate bracket steel template consists of an upper shaping steel template, a middle shaping steel template and a lower shaping steel template, wherein the upper shaping steel template is an upright surface curved surface template 4, the lower shaping steel template is an upright surface curved surface template 2, and the upright surfaces of the upper shaping steel template and the lower shaping steel template adopt an oblique cone male and female angle template with a curved surface and an inclined surface template of 20cm, so that the quality defect of the concrete surface at the intersection position of the upper and lower upright surfaces and the inclined surface of the bracket can be eliminated; the middle shaping steel template is an inclined plane centrum template 3, and the upper shaping steel template, the middle shaping steel template and the lower shaping steel template are sequentially connected by adopting M12 bolts or U-shaped buckles between the templates. The standard arc length of the annular single template is 1.2 m.

The upper, middle and lower three shaping steel templates are fixed through a tie bar 5, and the tie bar 5 is fixed by a tie bar anchor rod or a dowel bar 9. And the upper, middle and lower shaping steel templates are provided with longitudinal back edges 7 and circumferential back edges 8.

And the upper, middle and lower shaping steel templates are internally provided with a lacing wire taper sleeve 6 which is matched with the lacing wire 5 for use.

The upper, middle and lower shaping steel templates adopt acid pickling plates with high surface flatness and finish degree as the panels of the templates.

The lengths of the upper, middle and lower shaping steel templates are respectively 1.2m, 1.4m and 1.2m, and the ring arc length is 1.2 m.

Manufacturing a template:

selecting a high-quality hot-rolled sheet with the thickness of 4mm as a raw material for a template panel, a frame and the like, and removing an oxide layer by using an acid pickling machine, and trimming and finishing the acid pickled sheet;

the template panel adopts laser automatic blanking. In the early stage, the base materials of each template are programmed by a computer according to the proportion of 1:1, and each base material does not have flash and burr, so that the accumulated error is reduced during assembly welding. The connecting holes and the transverse and vertical ribs are formed in one step.

And the template assembly welding adopts gas shielded welding. The tire membranes and the clamps are manufactured according to the curved surfaces with different radiuses, the curved plates are tightly attached to the ribs, and the error control of the curved surface with each radius is guaranteed to be within an allowable range. The panel at the intersection part is manually milled with a bevel edge, and welding assembly must ensure that a welding line is a horizontal arc line; and finally, polishing the blank into a ridge. The pre-assembly is carried out in the manufacturing process, so that the upper, lower, left and right lines of the template are ensured to be horizontal and vertical, and particularly, the curve is required to be on the same horizontal plane.

Installing a template:

before the bracket template is installed, measurement lofting, inserted bar injection, bracket structure steel bar installation and embedded part installation construction are sequentially completed, and quality acceptance work of corresponding processes is completed.

After entering the field, the multidimensional curved surface shaping pickling plate bracket steel template is firstly pre-assembled on the field and checked and accepted for quality. After the acceptance is qualified, a dump truck is adopted to transport to an operation site, and manual installation is carried out according to the template configuration diagram. The method comprises the following steps:

1. finishing the surface cleaning of the template and the painting of a release agent;

2. and finishing the double faced adhesive tape sealing treatment of the concrete interface of the cast section and the joint position between the template and the template.

3. And (4) mounting and fixing the curved surface template of the lower vertical surface of the bracket, the inclined surface template and the curved surface template of the upper vertical surface in a segmented manner. The specific installation sequence is as follows: installing a lower vertical surface curved surface template → installing a lower vertical surface annular back edge → installing a lower vertical surface vertical back edge → reinforcing a lower vertical surface lacing wire → installing an inclined surface template → installing an inclined surface annular back edge → installing an inclined surface vertical back edge → reinforcing an inclined surface lacing wire → installing an upper vertical surface curved surface template → installing an upper vertical surface annular back edge → installing an upper vertical surface vertical back edge → reinforcing an upper vertical surface lacing wire → checking and accepting the whole template measurement.

4. And after the concrete pouring is finished and certain strength is achieved, manually removing the template. The dismantling sequence is as follows: dismantling an upper upright surface lacing wire taper sleeve → dismantling an upper upright surface vertical and circumferential back edge → dismantling an upper upright surface curved template → dismantling a lower upright surface lacing wire taper sleeve → dismantling a lower upright surface vertical and circumferential back edge → dismantling a lower upright surface curved template → dismantling an inclined plane lacing wire taper sleeve → dismantling an inclined plane vertical and circumferential back edge → dismantling an inclined plane taper template.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. The utility model provides a multidimensional curved surface design pickling board bracket steel form which characterized in that: the steel formwork comprises an upper shaping steel formwork, a middle shaping steel formwork and a lower shaping steel formwork, wherein the vertical surfaces of the upper shaping steel formwork and the lower shaping steel formwork adopt an oblique cone male-female angle formwork with a curved surface provided with a 20cm inclined plane formwork, and the middle shaping steel formwork adopts an oblique cone formwork; the upper, middle and lower shaping steel templates are connected in sequence.

2. The multi-dimensional curved surface shaping pickling plate bracket steel template as claimed in claim 1, wherein: the upper, middle and lower shaping steel templates adopt smooth acid pickling plates as the panels of the templates.

3. The multi-dimensional curved surface shaping pickling plate bracket steel template as claimed in claim 1, wherein: the curved surface templates of the vertical surfaces of the upper shaping steel template and the lower shaping steel template are provided with 20cm oblique cone male and female angle templates.

4. The multi-dimensional curved surface shaping pickling plate bracket steel template as claimed in claim 1, wherein: and built-in lacing bar taper sleeves are arranged on the upper, middle and lower shaping steel templates, and the fixed templates are reversely pulled through the cooperation of lacing bars and anchor rods or inserted bars.

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